Cam only, do I need gears?
Thread Starter
On The Tree
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Cam only, do I need gears? I have an 00 TA M6, full exhaust, koni/strano suspension, my next venture is to do a cam only setup (doing fuel pump, injectors etc),do I need to swap in 390s first? The car is only street driven and not beatin on too much but I'm looking to have something I really enjoy and can have fun with.
A part of me wants to do the gears because they're much cheaper than a full cam setup and tune, but if I can save that money and put it towards a cam I'll be that much closer.
Anyone run a cam only on stock gears?
What about stock cam with 390s?
Thoughts?
Thanks
A part of me wants to do the gears because they're much cheaper than a full cam setup and tune, but if I can save that money and put it towards a cam I'll be that much closer.
Anyone run a cam only on stock gears?
What about stock cam with 390s?
Thoughts?
Thanks
You don't have to have gears for a cam but depending on the size it may help it down low. I will say in my cam only/th350 car I took the 12 bolt out of my ss and put it in, the difference from going from a 3.42 to a 3.73 was night and day the car feels so much faster lol!
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From: Mississippi
Weird that you say that Scotty cause some guys like a 3.90 gear over a 4.10 cause you can hold 4th gear a tad bit longer before to shift and some guys say it's better in the 1320......
Which gear is better in the quarter will depend on the tire size and how quick the car is.
With stock gears and an aftermarket cam 6th will be about unusable at legal speeds.
Also some guys running the 1/8 might get by in third with the 3.90s, tire size plays into gear choice as well 28" tire with 4.10 acts as a number ally lower gear than 3.90 with 26".
Point being there is some more to understanding thing than "some guys like"
With stock gears and an aftermarket cam 6th will be about unusable at legal speeds.
Also some guys running the 1/8 might get by in third with the 3.90s, tire size plays into gear choice as well 28" tire with 4.10 acts as a number ally lower gear than 3.90 with 26".
Point being there is some more to understanding thing than "some guys like"
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Most LS1s are 28lbs injectors right? 30lbs is enough for over 500rwhp through an automatic if you look at AFR rather than DC. Doubt a cam only setup really maxed out 28lbs.
While on the subject the 80-85% rule is wrong too beside not having an easy accurate,way to monitor. People claim it is hard on the injectors but then send them out for flow testing where they run them open for a minute. On the car they have brief moments at the top of each gear where they might be near max DC, take a lot OD 10-11 second passes to equal the amount of time flow testing keeps them wide open.
Keeping the injector on the small side improves low speed performance and serious racers find a better 60ft.
Now an argument like wanting the better injector marching of aftermarket or being concerned about a 12yo pump are better arguments.
Maxed out based on the AFR going lean or the pcm random incorrect DC output?
Most LS1s are 28lbs injectors right? 30lbs is enough for over 500rwhp through an automatic if you look at AFR rather than DC. Doubt a cam only setup really maxed out 28lbs.
While on the subject the 80-85% rule is wrong too beside not having an easy accurate,way to monitor. People claim it is hard on the injectors but then send them out for flow testing where they run them open for a minute. On the car they have brief moments at the top of each gear where they might be near max DC, take a lot OD 10-11 second passes to equal the amount of time flow testing keeps them wide open.
Keeping the injector on the small side improves low speed performance and serious racers find a better 60ft.
Now an argument like wanting the better injector marching of aftermarket or being concerned about a 12yo pump are better arguments.
Most LS1s are 28lbs injectors right? 30lbs is enough for over 500rwhp through an automatic if you look at AFR rather than DC. Doubt a cam only setup really maxed out 28lbs.
While on the subject the 80-85% rule is wrong too beside not having an easy accurate,way to monitor. People claim it is hard on the injectors but then send them out for flow testing where they run them open for a minute. On the car they have brief moments at the top of each gear where they might be near max DC, take a lot OD 10-11 second passes to equal the amount of time flow testing keeps them wide open.
Keeping the injector on the small side improves low speed performance and serious racers find a better 60ft.
Now an argument like wanting the better injector marching of aftermarket or being concerned about a 12yo pump are better arguments.
Thread Starter
On The Tree
Joined: Dec 2012
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I've read a ton about the shitty 10 bolt, I'm runnin nitto 555s and don't ever launch it, it should be fine.... If it doesn't then I have an excuse to upgrade!
Last edited by DrBlockHed; Jan 3, 2015 at 10:11 AM.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 169
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